相关实验视频
Updated: Jun 22, 2025

06:40
Synthesis of a Water-soluble Metal–Organic Complex Array
Published on: October 8, 2016
9.8K
分子碗用于纳入有毒抗癌药物甲氨酸复合物的分子碗
Pratik Karmakar1,2, Tyler J Finnegan1, Darian C Rostam1
1Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA badjic.1@osu.edu.
Chemical science
|July 5, 2024
概括
新型分子碗有效地结合抗癌药物甲状腺素 (MTX),在水中形成稳定的复合物. 碗2^6+显示最强的结合,这表明有可能开发抗甲醇过量剂的抗剂.
科学领域:
- 超分子化学 超分子化学
- 药用化学 医学化学
- 材料科学 材料科学 材料科学
背景情况:
- 抗癌药物甲醇 (MTX) 具有狭窄的治疗指数,需要方法来管理过量服用.
- 体,具有定义腔的分子宿主,为药物结合和输送应用提供了潜在的潜力.
- 基于tribenzotriquinacene (TBTQ) 核心的新型洞穴为分子识别提供了独特的结构特征.
研究的目的:
- 为了合成和描述新型分子碗作为潜在的甲状腺酸盐 (MTX) 的结合剂.
- 在水性介质中研究MTX-cavitand复合物的结合相互作用和稳定性.
- 评估这些腔体作为治疗剂的潜力,特别是作为MTX过量剂的抗剂.
主要方法:
- 合成分子碗1^6+和2^6+来自hexabromo-tribenzotriquinacene的合成.
- 使用核磁共振 (NMR) 光谱 (包括可变温度的NMR) 和分子动力学 (MD) 模拟的表征.
- 使用NMR和计算方法 (密度函数理论 - DFT,蒙特卡洛分子建模 - MCMM) 的结合研究来确定复杂的稳定性和结合模式.
主要成果:
- 两种新型的两形腔体,碗1^6+和2^6+,得到了良好的合成产量.
- 这些碗在水中自我结合,并表现出具有弹性边缘的预先组织结构.
- 碗2^6+通过各种分子间相互作用和解溶,对MTX表现出最强的结合亲和力 (微分子范围),形成稳定的二元复合体.
结论:
- 合成的分子碗,特别是碗2^6+,是甲醇酸的有效结合剂.
- 碗2^6+显示了迄今为止报告的MTX的最高结合亲和力,显示了治疗应用的前景.
- 这些发现支持开发碗2^6+作为管理癌症患者MTX过量服用的潜在解药.
相关概念视频
Complexometric Titration: Ligands
941
Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
941
EDTA: Auxiliary Complexing Reagents
575
EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
575
Phase II Reactions: Methylation Reactions
174
Methylation is a phase II biotransformation process involving the attachment of a methyl group to a substrate. Enzymes known as methyltransferases orchestrate this reaction.
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...
174
Complexation Equilibria: The Chelate Effect
497
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
497
Extraction: Advanced Methods
444
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
444

